Trojan:W32/Agent.A

Classification

Category :

Malware

Type :

Trojan

Aliases :

Trojan:W32/Agent.A, Trojan-clicker.html.agent.a

Summary

Trojan:W32/Agent.A redirects infected machines to specified advertisement websites, resulting in unwanted pop-up advertisements and banners being displayed on the machine.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

Agent.A arrives on the system as an HTML script file, which is saved to the Temporary Internet Files directory.

Activity

Upon execution, Agent.A displays a blank web page to hide its actual content.It attempts to bypass pop-up blockers such as the following:

  • Norton Internet Security popup blocker
  • Internet Explorer Popup blocker

It also adds the following cookie:

  • PayPopUpAds

This is used to track user's browsing habits.